Greatnews is my RSS reader. I love it.
Now, I'm trying to establish some backup activities.
I figured I can export my labelled news - the ones I want to keep, to a XML file external to GreatNews.

I'm posting asking you about the way can I see these exported news kept in these files.
Can you suggest me a simple, fast and FREE XML reader that let my simply configure the layout of the news I kept, maybe in the same way I changed the Greatnews CSS stylesheets to personalize the way I see the posts. Any suggestions? What software do you use for that?